A refrigerant is an element in the form of liquid or gas, which helps the refrigeration process seize the heat from inside and then releases it outside of a fridge.

CFC is composed of carbon, chlorine, and fluorine such as R12, R113, R500, R502, etc. CFC is stable enough to reach the stratosphere without too many problems. However, it contributes to the destruction of the ozone layer. HCFC are molecules composed of carbon, chlorine, fluorine, and hydrogen. It is less stable than CFC. They are R22, R123, R124, R401a etc. HFC includes carbon, fluorine, and hydrogen so it does not participate in the ozone layer depletion. There are quite a lot of refrigerants for certain purposes of use but Here are 4 types highly recommended in the refrigeration system for many reasons


R12 – Dichlorodifluoromethane – was used in most refrigeration and vehicle air conditioning applications prior to 1994. Not until 2010 was its manufacture completely banned due to its effect on the ozone layer.

R12 is nontoxic, nonflammable, pretty cheap plus easy to set up for the refrigeration system, which is for the domestic as well as commercial applications. Because of its stability, it does not crumble even under extreme working conditions.

One major issue of R12 is because it’s CFC, it is a high potential cause of Global warming in the future. Therefore, R134a would be a good choice for replacement.


Another name for R134a is Tetrafluoroethane. R134a has a boiling point of -15.34 degrees Fahrenheit that makes it exist in gas form when exposed to the environment. R134a could be considered as one of the most common refrigerants for many refrigeration and air-conditioning applications. Moreover, It can be used as a propellant in the pharmaceuticals industry. It is great news to know that it has little effect on the environment. The overall physical and thermodynamic features of refrigerant R134a is almost similar to that of refrigerant R12. In short, R134a should be widely used in many other industries in order to keep the World clean


R290 can be called Propane. It is used as an alternative to R22 and R502 in low, medium, and high-temperature refrigeration and air conditioning applications. It is also an excellent alternative to R134a

One interesting fact about R290 is that the more pure propane is, the lower the environmental impact is. It is a non-toxic refrigerant as well as significantly lower global warming potential (GWP), which means it is not a big concern with the destruction of the ozone layer.

However, R290 requires special handling requirements/certifications while there are not many trained and verified technicians.


Another gas used for various commercial refrigerators because of the least greenhouse effect is R600a, also known as Isobutane (C4H1). R600a’s cooling performance is excellent. However, it not only requires necessary equipments, proper packaging following guidelines but also should be kept away from fire.

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  • On May 26, 2020
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